Info about sending scores to colleges?

Hi guys! I’m a high school senior and I’m in a bit of a predicament. I took both the ACT and the SAT and got a 34 and a 1470, respectively. I have taken three Subject Tests and a few AP tests as well.
As I am filling out the Common App (and as I am figuring out what Score Choice is), I have begun to wonder: for the colleges that use Score Choice, am I allowed to send them only my ACT score and not include my SAT score in my self-report? I’m afraid that my 1470 SAT score is not exactly up-to-par with my 34 ACT score, and I do not want colleges to take second guesses about the legitimacy of my ACT score while taking into account my slightly lower-in-comparison SAT score.
What I am also worried about is that I am scheduled to take the SAT again this Saturday in an attempt to raise that score. I do not think I adequately studied, as I have scored lower than a 1470 on my practice tests. Would you suggest that I simply skip the test in order to avoid the risk of scoring lower this time around?
Also, if I am able to only send my ACT score, would that be my best option? What are the pros/cons of sending both scores, albeit one is slightly lower than the other?
I am sorry that this comment is a bit lengthy; I am the first sibling in my family to go to college, so I do not have much to base my actions off of.
I thank everyone in advance for helping me out with this; I will definitely be a lot less stressed after this is all ironed out!

Only a handful of colleges require you to send all scores. In most cases, yes, you can just send your ACT. Read the admissions web page for each school to check because requirements can and do change.

Whether or not to retake the SAT is a personal decision. At this point you won’t get much in the way of a refund. You might as well take it and see if your scores surprise you.

And most schools will just look at your highest score (single sitting or superscore, based on their policy) and ignore the others, even if you did send them. 1470 and 34 (1500 concordance) are within typical test-to-test variance. If you had a 34 and an 1100 it way garner some attention, but those scores won’t.